TMS4461-12NL is 262,144-bit 256K multiport video dynamic random access memory, DIP-24 Package. High speed dual-ported (65,536 x 4 organization (64K x 4)). This TMS4461-12NL is faster and can replace the TMS4461-15NL. This ram is used on many arcade and pinball applications such as NARC, Smash TV, S.T.U.N. Runner, Hard Drivin and others.